Controlling device for deep-seal siphons.



No. 871,427. PATENTED N07. 19, 1907. S. W. MILLER. GONTROLLING DEVICE POR DEEP SEALSIPHONS. ArrLIoATIon FILED 001.8, laos.

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PATIENT OFFICE.

SIDNEY W. MILLER, OF CHICAGO, ILLINOIS.

CONTROLLING DEVICE FOR DEEP-SEAL SIPHONS.

Specication of Letters Patent.

Patented Nov. 19, 1907 *Application filed October 8, 1906. Serial No. 337.961

To all whom t may concern.'

Be it. known that I, SIDNEY W. MILLER,

a citizen of the United States, of Chicago, in thecounty of Cook and State of Illinois, haveinvented certain new and useful Improvements in Controlling Devices for Deep- Seal Siphons; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to thc letters of reference marked thereon, which form a part of this specification. lThis invention relates to improvements in automatic, deep Seal trapped siphons designed to automatically empty the liquid contents of a tank or receptacle.

The invention relates more specifically to an improved auxiliary or blow-ott' trap designed 'to adjustably control the emptying operation of the Siphon, and relates further to a novel venting device lor venting siphons of this character, and constructed to regulate the level at which the Siphon is Sealed and vented (hiring the operation thereof.

Among the objects of the invention 1S to provide improvements in auxiliary or blowoff ytraps for Siphons of this character so constructed as to be capable of adjustment to vary the effective seal of the blow-off or auxiliary trap, whereby the Siphon mav be brought into operation under different liquid levels in al tank which the Siphon is designed to empty, or the blow-off trap may be adjusted to operate with a given or required head in the tank. In the 'first Vmentioned mode of adjustment, the Siphon may be operated to empty varying quantities of liquid from the tank.

A further object of the invention is to provide an vimproved venting device which is adjustable to vary the sealing and. venting level of the Siphon and thereby varying the liquid level in the tank at which the siphoii operates to empty the tank. l

Further objects of the invention will appear` from the description which follows and the invention consists in the matters hereinafter setv forth and more particularly pointed out in the appended claims.

In the drawingsz-Figurelis a vertical sectional view of a Siphon and my improved venting and auxiliary or blow-off trap equipment, showing a fragment ofthe tank which is emptiedl by said Siphon to illustrate the relationof the Siphon thereto; Fig.` 2 illustrates my improved blow-off or auxiliary vtrap of the main Siphon.

trap connected with a Siphon, wherein the blow-off trap iS located in a chamber separate from the tank which is emptied by Said Siphon. Fig. 3 is a detail illustratingr a modified 'form of adjustment for the outlet leg of the trap.

Referring irst to the construction Shown in Fig. 1, A designates a tank which is filled from any suitable source supplying liquid, and B designates, as a whole, a deep seal7 trapped Siphon through the medium of D designates, as a whole,'a venting device comprising a member d that extends downwardly through the bell b into the longer leg of the Siphon to a point below the lower end of the outlet .end thereof, a transverse portion Z1 and a downwardly opening vertical member d2 located outside the bell and constituting the outlet end. The Said venting device embraces features of novelty which will hereinafter be described.

The Siphon B is equipped with an auxiliary or blow-oli' trap comprising an inner vertical leg E that rises upwardly into the bell or shorter leg of the Siphon, an outer vertical leg El arranged generally parallel with the inner leg and connected at its lower end with the lower end of said inner leg by a transverse connection e. The overHow of the blow-oil trap is drained, when liquid overflows the upper end of the outer leg E1 thereof, through the medium of a pipe E2 that communicates with the outer leg El through a cross-connection and discharges its contents into the outlet leg of the deep Seal In accordance with one feature of my invention, the Said blow-oil' or auxiliary trap is designed to be elongated or Sliortened longitudinally of its length, so as to vary the depth of Seal thereof, and the parts are so arranged, when applied to a Siphon of the construction herein shown, that the maximum elongation of Said trap provides a Seal in the blow-olf trap of somewhat less depth than that of the deep Seal trap of the main Siphon, and Said auxil- 3 5 operates.

. iary or blow-off trap may be'adjusted to operate the Siphon at varying liquid levels of the tank A, rangingV gradually from the shortest depth of seal of said blow-off trap to 5 a depth of seal slightly less than that of the In some deep seal trap of the main siphon. forms of siphonic apparatus this relation of the depth of seal-of theblow-ofl and main Siphon trap need not be maintained. The

l0 construction shown whereby this result is attained consists in providing the outlet leg of the blow-off with a vertically adjustable elongation or pipe F that is herein shown as having telescopic engagement with said leg j of the blow-oft: trap, eitherof thepipes fitting within the other as most convenientv or desirable. The said extension member F of said outlet leg is designed in all of its adjustments'to extend beyond the maximum liquid jjlevel in the tank which is emptied by the siphon. In the form of trap .herein shown,.

whereinthe overflow of the trap is drained into the outlet leg of the deep seal trap, an extension .drain pipe F1 is provided that is connected withV the extension of the outlet leg of the blow-off trap by a transverse connection'f at a pointbetween the ends of said outlet leg extension. 'Thus said transverse connecting pipe f .constitutes the draining level of the adjustable blow-off trap in all po- 40 liquid level in the tank A, for the dimensions shown, while-in the adjustment shown in dotted lines, the Siphon is adapted to operate at the maximum' liquid level thereof. Various ranges of adjustment may be made between the limits shown, each particular adjustment effecting a corresponding depth of seal of the auxiliary or blow-off trap.

The said outlet leg and drain pipe extensions F F1 are shown as extending through suitable stuffing boxes G G located at the tops of the main outlet leg of the blow-0H trap and the drain pipe. Said 'stuffing boxes are arranged to prevent the escape of Water between the telescopic pipes. It will be observed that the connection between said parts E1 and F need only be made sufficiently tight to prevent the escape of water, inasmuch as the blow-off trap contains a column of water between said oint G and the pressure space in the siphon, so that air under pressure of the siphon does not find its way to said joint until the blow-off trap is forced and the pressure in the'siphon released to bring the Siphon into operation.

Any suitable joint for this purposemay be provided.- i The stuffing boxes G may be replaced by suitable metal to metal iit of the telescoping pipes, or a clamping device may be provided to produce said joint in any well` known or familiar manner.

In Fig. 2 I have shown my improved blow- `off trap adapted to a slightly different form of Siphon apparatus, wherein the outlet leg t3 of the deep seal trap b2 discharges into a chamber-A1. separated from the tankA by a wall a. In the construction shown in Fig. 2, the blow-off trapis combined with the'venting device vof the Siphon, the parts being constructed asfollows: H designates `a pipe that extends downwardly through the bell or shorter leg of the siphon into the'longer leg thereon to a level ebelow the outlet leg of the the Siphon is provided, as in the prior construction, with an extension pipe K that has longitudinally adjustable connection with the pipe J1. As herein shown, the pipe K is made larger than the pipe J1 and is fixed to a nut L that fits outside of and engages exterior screw-threads on said pipe J1. The pipe K, therefore, telescopes outside the pipe J1. The interi'itting screw-threads afford the close joint between the pipes. Such a connection may be' used in the other trapdescribed, or in connection with the adjustable vent device to be described. In this construction, the blow-off trap is refilled after each operation byliquid from the tank A through the medium of a downwardlyl opening pipe M, located in the tank A, in open communication at its upper end with the cross or horizontal pipe I. Therefore, after the auxiliary or blow-off trap is -forced and air from the Siphon escapes through said trap the liquid rushes through the pipes M and I and refills the auxiliary or blow-ofi trap before the level of the liquid in the tank drops below the pipe I, and thereby seals `said trap. The pipe M may be made larger than the pipe I so as to insure the 'filling of the auxiliary trap, notwithstanding the fact that a portion of the-water passing upwardly through the pipe M finds its way into the main Siphon through the vent pipe H. It will be furthermore noted that the pipes H, I and M have the further function of venting the Siphon after the completion ofthe emptying operation thereof. I In the construction shown in Fig. 2, it will'be observed that the auxiliary or blowoff trap is renderedaccessible at alltimes for inspection and repair by reason of its location in a chamber separate from the tank A. 1n said latter construction, furthermore, the deep seal siphon discharges into the chamber A1 from whence the liquid is directed through a suitably located discharge pipe or conduit (not shown).

An im ortant feature of advantage of the adjustab e blow-oil trap herein shown is that the blow-off tra itself is iixed in place and does not in itsel require to be moved out of operative position for adjustment of the trap for the purpose set forth. 'hloreoverg the ex tension of the normally stationary portion of, the outlet leg of the trap is always maintained upright and is connected with said stationary outlet leg in a manner not tending to throw stress on any part of the construction or to produce wear during re-adjustment thereof. Afurther advantage of my improved adjustable trap is found in the wide range of adjustment which may be effected thereby. A still further advantage of the construction is that its use in either ol the types of apparatus herein disclosed, or other types of apparatus to which it may be applied, is suc that it is easy of access for adjusting `purposes and for the purpose of repairing or replacing the parts.

llt/ly improvement in the venting device embraces, in part, an extension pipe d extending downwardly from and having telescopic or elongated connection with the downwardly extending member d2 ot said vent pipe. The joint or connection between said pipes is such as to prevent leakage oi air under pressure, locked in the body ol the Siphon, just before it operates. Such connection may consist oi a suitable i'orm ol stuffing box d* or it may be provided by metal contact oi the pipes brought together in any suitable manner to provide the desired integrity ci' the joint. the position of said adjustable or elongated extension ol" the outlet member ol: the venting pipe is such that the venting or sealing level of the pipe and the siphon may be varied at will within the limits oi: the length o said venting pipe and the practical conditions surrounding `the use of the apparatus. I'thus said venting device may operate itselit', or in con nection with the adjustable blow-oil' or .auxiliary trap just described, to vary the depth oi' liquid in the tank required to bring the Siphon into operation to empty the tank` and to vary the amount oi liquid discharged from the tank in each operation oi the Siphon.

A further improvement in the venting device with which the extension outlet end d3 of the pipe (Z2 cooperates, consists in providing a sliding adjustable connection of the pipe d with the top wall of the bell, whereby the level ot the lowerl end ot said pipe d may be varied without the necessity of removing the pipe :from the siphon or removing or disturbing the bell. The said pipe (l extends through a suitable stul'ling box di in the top wall oi the bell, such stuil'- ing box or other equivalent joint being con strueted to prevent escape ol air around the pipe. By reason of such adjustment, and the adjustable outlet end of the ventl pipe, a perfect adjustment oi said parts may be established and maintained. l

.llt will be obvious that my improvements may be applied to siphons oi various constructions, diilering irom those herein shown as demanded by the uses to which the siphons are employed, without departing lfrom the spirit ot the invention. l. do not wish, thereiore, to be limited to the (amstructions herein described except as hereinaitm' made the subject ol" specilic claims.

l. An auxiliary or blow-oiltrap For siphons adapted to extend at one end into the siphon, the outlet end oi: the trap being` adapted to move endwise relatively to the siphon and to the inlet end oin the trap lor the purpose ol varying the depth ol'V seal ol said trap.

2. An auxiliary or blow-oil 'trap i'or siphons, the outlet end ot' which has an endwise adjustmentrelatively to the siphon and to the inlet end ci the trap, and means providing a tight joint between the outlet end of said trap and theA part in which it slides.

3. An auxiliary or lilow-o'll trap i'or deep seal siphons embracing, in combination with its outlet leg, an extension. pipe having telescopic connection therewith constructed to vary the depth of seal ol" the blow-oil' trap.

4. An auxiliary or blow-oil trap for siphons embracing, in connection with its outlet leg, an extension pipe having tele.- scopic connection therewith, and means` providing a close joint between the telescoping members.

5. 1n an auxiliary or blow-oill trap for siphons, the combination with the outlet leg thereof and a drain pipe through which the outlet leg of the trap is adapted to drain, ol' adjustable extension pipes il'or said outlet leg of the trap and drain pipe provided with. a cross-connection movable with said extension pipes.

(i. In a blow-oil or auxiliary trap i'or siphons, the combination with the outlet leg thereof and a drain pipe through which the contents of the outlet leg of the trap is adapted to drain, of extension pipes adapted to have telescopic connection with said outlet leg oi the trap and drain pipe, respectively, and connected between the ends of the outlet leg extension by a transverse c onneetion.

7. The combination with a Siphon having a trapped discharge limb, of an auxiliary or blow-oi'l' trap, the outlet leg ol said auxiliary trap being located outside the Siphon and adapted for sliding adjustment for the purpose set forth.

8. The combination with a Siphon having a trapped discharge limb, of an auxiliary or blow-Ofi' trap, the outlet leg of said'auxiliary trap being located outside the Siphon and longituzilinallyT extensible for the purpose set forth.

9. The combination with a Siphon having a trapped discharge limb, of an auxiliary or blow-off trap, a drain pipe into which the blow-off trap drains, and means for varying the depth of seal of the auxiliary or blow-off trap.

10. The combination of a Siphon having a trapped discharge limb, of an auxiliary trap, means whereby the outlet end of the blowoif `trap has an up-and-down sliding adjustment to vary the depth of seal thereof, and a drain pipe connected with the outlet leg of the blow-off trap in all positions of adjustment of the latter.

11. The combination with a Siphon having a trapped discharge limb, of an auxiliary trap, a drain pipe into which the outlet leg of the auxiliar)T or blow-off trap drains, an extension pipe for the outlet leg of the trap adjustable for varying the depth of seal in said trap, and an extension pipe for the drain` pipe connected with said extension of the outlet leg of the blow-off trap. v

12. The combination with a Siphon having a trapped discharge limb, of an auxiliary trap, and an extension pipe having telescopic engagement with the outlet leg of Said blowoff trap at a point outside the Siphon for the purpose set forth.

13. The combination with a Siphon having a trapped discharge limb, of an auxiliary trap, an extension pipe having telescopicengagement with the outlet leg of said blow-off trap at a point outside the Siphon for the purpose set forth, and means for providing a close joint between said extension pipe and the outlet leg of the blow-ofi" trap. 14. The combination with a downwardly opening intake limb of a Siphon, of an auxiliary trap comprising an upwardly opening pipe extending upwardly into said intake limb at the side of discharge limb of Siphon, and an upwardly opening pipe outside said limb connected at its lower end with the inner pipe by a transverse pipe.

15. The combination with a downwardly opening intake limb of a Siphon, of an auxiliary trap comprising an upwardly opening pipe extending upwardly into said intake limb at the side of discharge limb of Siphon, ,and an upwardly opening pipe outside said limb connected at its lower end with the inner pipe by a transverse pipe, and means for varying the depth of seal in said outer pipe.

16. The combination with a downwardly opening intake limb of a Siphon, of an auxiliary trap comprising an upwardly opening pipe extending upwardly into said intake limb at the side of discharge limb of Siphon, an upwardly opening pipe outside said limb connected at its lower end with the inner pipe by a transverse pipe, said outer pipe being longitudinally extensible, for the purpose Set forth.

17. The combination with a downwardly opening intake limb of a Siphon, of an auxiliary trap comprising an upwardly opening pipe extending upwardly into said intake limb at the side of discharge limb of Siphon, an upwardly opening pipe outside said limb connected at its lower end with the inner pipe by a transverse pipe, a drain pipe connected with the upper end of said outer pipe.

1S. The combination with a downwardly opening intake limb of a Siphon, of an auxiliary trap comprising an upwardly opening pipe extending upwardly into said intake limb at the side of discharge limb of Siphon, an upwardly opening pipe outside said limb connected at its lower end with the inner pipe by a transverse pipe, a drain pipe connected with the upper end of said outer pipe, said outer pipe of the trap and the drain pipe being longitudinally extensible, for the purpose set forth.

19. The combination with a Siphon, of a vent pipe, the longer leg of which enters, and has vertical adjustment relatively to, the Siphon, and provided with a vertically adjustable outlet end.

In testimony, that I claim the foregoing as my invention I affix my signature in the presence of two witnesses, this 5th day of October A. D. 1906.

SIDNEY w. MILLER. 

